package name.elftesting.vncelf;

//
//  Copyright (C) 2002 Constantin Kaplinsky, Inc.  All Rights Reserved.
//
//  This is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation; either version 2 of the License, or
//  (at your option) any later version.
//
//  This software is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this software; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
//  USA.
//

//
// HTTPConnectSocket.java together with HTTPConnectSocketFactory.java
// implement an alternate way to connect to VNC servers via one or two
// HTTP proxies supporting the HTTP CONNECT method.
//

import java.net.*;
import java.io.*;

class HTTPConnectSocket extends Socket {

	public HTTPConnectSocket(String host, int port, String proxyHost,
			int proxyPort) throws IOException {

		// Connect to the specified HTTP proxy
		super(proxyHost, proxyPort);

		// Send the CONNECT request
		getOutputStream().write(
				("CONNECT " + host + ":" + port + " HTTP/1.0\r\n\r\n")
						.getBytes());

		// Read the first line of the response
		DataInputStream is = new DataInputStream(getInputStream());
		String str = is.readLine();

		// Check the HTTP error code -- it should be "200" on success
		if (!str.startsWith("HTTP/1.0 200 ")) {
			if (str.startsWith("HTTP/1.0 "))
				str = str.substring(9);
			throw new IOException("Proxy reports \"" + str + "\"");
		}

		// Success -- skip remaining HTTP headers
		do {
			str = is.readLine();
		} while (str.length() != 0);
	}
}
